Find best point estimate for mean using normal distribution and given sample results on a TI-83 calculator. alpha = 0.05, x bar = 12.7, stardard deviation = 5.6, n = 30 1. Use normal distribution and given sample results to findI. Best point estimate for uII. Margin of errorIII. Confidence interval for ua. a=0.05, x=12.7,0 = 5.6,n= 30b. a = 0.05, x= 84.6, o = 7.8, n= 42c. confidence level = 90%, x= 3.1 , o = 0.4, n= 100

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Description: Find best point estimate for mean using normal distribution and given sample results on a TI-83 calculator. alpha = 0.05, x bar = 12.7, stardard deviation = 5.6, n = 30 1. Use normal distribution and given sample results to findI. Best point e

Given Information: Sample mean x¯ = 12.7 Standard deviation σ = 5.6 Sample size (n) = 30…

Answered: 1. Use normal distribution and given…

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Find best point estimate for mean using normal distribution and given sample results on a TI-83 calculator.

alpha = 0.05, x bar = 12.7, stardard deviation = 5.6, n = 30

1. Use normal distribution and given sample results to find
I. Best point estimate for u
II. Margin of error
III. Confidence interval for u
a. a=0.05, x=12.7,0 = 5.6,n= 30
b. a = 0.05, x= 84.6, o = 7.8, n= 42
c. confidence level = 90%, x= 3.1 , o = 0.4, n= 100

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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1. Use normal distribution and given sample results to find I. Best point estimate for u II. Margin of error III. Confidence interval for u a. a=0.05 , x=12.7,0 = 5.6,n= 30 bg=005 r= 84 6 g=78 n= 42